2005 Chevy Malibu rear drum replacement

Tiny
DREDMON01
  • MEMBER
  • 2005 CHEVROLET MALIBU
  • 6 CYL
  • FWD
  • AUTOMATIC
  • 115,000 MILES
What are the step by step instructions for replacing the pads on rear drums
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Friday, February 5th, 2010 AT 9:21 AM

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Tiny
ERNEST CLARK
  • EXPERT
Here's a step-by-step on R&R for your rear drums. I highly suggest purchasing a "Single Vehicle" subscription to a service such as Alldata or Mitchell 1. This will give you pictures and service hints to refer to and will come in handy on your next project.

It only cost 25-30 bucks depending on where you buy it.

REAR DRUM BRAKES.

Remove the tire and wheel assembly.

Remove the brake drum.

Remove the upper return springs from the shoes using tool J-8057 brake spring tool.

Remove the hold-down springs using J-8049 brake spring tool.

Remove the shoe hold-down pins from behind the brake backing plate.

Lift up the actuator lever for the self-adjusting mechanism and remove the actuating link. Remove the actuator lever, pivot, and the pivot return spring.

Spread the shoes apart to clear the wheel cylinder pistons and remove the parking brake strut and spring.

Disconnect the parking brake cable from the lever. Remove the shoes, still connected by their adjusting screw spring.

With the shoes removed, note the position of the adjusting spring and remove the spring and adjusting screw.

Remove the C-clip from the parking brake lever and the lever from the secondary shoe.

Use a damp cloth to remove all dirt and dust from the backing plate and brake parts.

To install:

Check the backing plate attaching bolts to make sure they are tight. Use fine emery cloth to clean all rust and dirt from the shoe contact surfaces on the plate and lubricate with brake grease. Check the wheel cylinder for signs of leakage.

Clean all parts completely in brake solvent and air dry. Clean the backing plate shoe contact points.

Inspect the inside of the brake drum. If worn, heavily grooved or if the opening is distorted, the drum should be refinished or replaced.

Inspect the brake shoe springs and self-adjuster mechanism. Disassemble the adjuster mechanism and clean the threads and coat with grease. Make sure the adjuster assembly turns freely before installing in the vehicle.

Install the parking brake lever on the secondary shoe and secure with C-clip.

Install the adjusting screw and spring on the shoes, connecting them together. The coils of the spring must not be over the star wheel on the adjuster. The left and right hand springs are not interchangeable.

Spread the shoe assemblies and connect the parking brake cable. Install the shoes on the backing plate, engaging the shoes at the top temporarily with the wheel cylinder pistons. Make sure the star wheel on the adjuster is lined up with the adjusting hole in the backing plate, if equipped.

Spread the shoes slightly and install the parking brake strut and spring. Make sure the end of the strut without the spring engages the parking brake lever. The end with the spring engages the primary shoe (the one with the shorter lining).

Install the actuator pivot, lever and return spring. Install the actuating link in the shoe retainer. Lift up the actuator lever and hook the link into the lever.

Install the hold-down pins through the back of the plate using J-8057. Install the lever pivots and hold-down springs. Install the shoe return springs using J-8049. Be careful not to stretch or distort the springs.

Make sure the linings are in the right place, the self-adjusting mechanism is correctly installed, and the parking brake parts are hooked up.

Measure the distance from the edge of the primary lining to the edge secondary lining, then measure the inside width of the drum. Adjust the linings by means of the adjuster so the drum will fit onto the linings.

Install the hub and bearing assembly onto the axle if removed. Torque the retaining bolts to 35 ft. Lbs. (55 Nm).

Install the drum and the wheels.

Adjust the brakes. Install a rubber hole cover in the adjustment knock-out hole after the adjustment is complete. Adjust the parking brake.

Road test the vehicle and verify proper brake operation.

WARNING
Some models or aftermarket brake parts may contain asbestos fibers which can become airborne in dust. Breathing dust with asbestos fibers may cause serious bodily harm. Use a water-dampened cloth in order to remove any dust on brake parts. Equipment is available commercially in order to perform this washing function. These wet methods prevent fibers from becoming airborne.

Before servicing the vehicle, refer to the Precautions Section.

Raise and support the vehicle.

Remove the tire and wheel assembly.

Remove the brake drum.

Remove the adjuster spring.

Remove the adjuster actuator lever from the pivot.

Use the J 38400 to spread the top of the brake shoes to remove the adjuster assembly from the brake shoes.

Position the hook end of the J 38400 under the universal spring and lightly pull the universal spring end out of the shoe web hole. Hold the universal spring with the tool while removing the brake shoe.

Fig. J 38400 used to release universal spring

Release the park brake cable from the park brake lever.

Position the hook end of the J 38400 under the universal spring and lightly pull the universal spring end out of the shoe web hole. Hold the universal spring with the tool while removing the brake shoe.

To install:

Apply a thin, light coat of high temperature silicone brake lubricant to the contact surfaces of the right and left brake backing plates.

Position the hook end of the J 38400 under the universal spring and lightly pull the universal spring end out while installing the trailing brake shoe. Ensure that the universal spring properly engages the brake shoe web hole.

Position the hook end of the J 38400 under the universal spring and lightly pull the universal spring end out while installing the trailing brake shoe. Ensure that the universal spring properly engages the brake shoe web hole.

Install the park brake cable to the park brake lever on the brake shoe.

Use the J 38400 to spread the top of the brake shoes to install the adjuster assembly.

Install the adjuster actuator lever to the pivot.

Install the adjuster spring.

Adjust the drum brake system.

Install the brake drum.

Install the tire and wheel assembly.

Lower the vehicle.
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Friday, February 5th, 2010 AT 12:38 PM

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